| 摘要 |
PROBLEM TO BE SOLVED: To provide an electron emission source excellent in electron emission performance without need of a post-treatment process, to provide manufacturing method of the same, a field emission element using the same, and a composition for forming the electron emission source.SOLUTION: An electron emission source comprising: an organic residue; a crack part formed at least on a portion of a region; and a needle-like nano-size substance exposed in the crack part, is disclosed. The needle-like substance prefers to be exposed between inner walls of the crack part. Furthermore, a field emission element comprising the electron emission source, and a composition for electron emission source formation, are also disclosed. |
